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#ifndef CYGONCE_HAL_PLF_INTR_H
#define CYGONCE_HAL_PLF_INTR_H
 
//==========================================================================
//
//      plf_intr.h
//
//      RefIDT 79S344A Interrupt and clock support
//
//==========================================================================
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// -------------------------------------------                              
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//
// As a special exception, if other files instantiate templates or use      
// macros or inline functions from this file, or you compile this file      
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// ####ECOSGPLCOPYRIGHTEND####                                              
//==========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):    tmichals
// Contributors: 
//              
// Date:         2002-09-20
// Purpose:      Define Interrupt support
// Description:  The macros defined here provide the HAL APIs for handling
//               interrupts and the clock for the IDT79S334A board.
//              
// Usage:
//              #include <cyg/hal/plf_intr.h>
//              ...
//              
//
//####DESCRIPTIONEND####
//
//==========================================================================
 
#include <pkgconf/hal.h>
#include <cyg/infra/cyg_type.h>
#include <cyg/hal/plf_io.h>
 
#define HAL_PLATFORM_RESET()            CYG_EMPTY_STATEMENT
 
#define HAL_PLATFORM_RESET_ENTRY        0xbfc00000
 
 
//--------------------------------------------------------------------------
// Interrupt vectors.
 
#ifndef CYGHWR_HAL_INTERRUPT_VECTORS_DEFINED
// the default for all MIPS variants is to use the 6 bits
// in the cause register.
 
// These are only HW interrupts
#define CYGNUM_HAL_INTERRUPT_0                0
#define CYGNUM_HAL_INTERRUPT_1                1
#define CYGNUM_HAL_INTERRUPT_2                2
#define CYGNUM_HAL_INTERRUPT_3                3
#define CYGNUM_HAL_INTERRUPT_4                4
#define CYGNUM_HAL_INTERRUPT_5                5
 
// Min/Max ISR numbers and how many there are
#define CYGNUM_HAL_ISR_MIN                     0
#define CYGNUM_HAL_ISR_MAX                     30
#define CYGNUM_HAL_ISR_COUNT                   31
 
// The vector used by the Real time clock. The default here is to use
// interrupt 5, which is connected to the counter/comparator registers
// in many MIPS variants.
 
#define CYGNUM_HAL_PCI_A      CYGNUM_HAL_INTERRUPT_1
#define CYGNUM_HAL_PCI_B      CYGNUM_HAL_INTERRUPT_2
#define CYGNUM_HAL_PCI_C      CYGNUM_HAL_INTERRUPT_4
#define CYGNUM_EXPANSION	  CYGNUM_HAL_INTERRUPT_3
 
 
#ifndef CYGNUM_HAL_INTERRUPT_RTC
#define CYGNUM_HAL_INTERRUPT_RTC            CYGNUM_HAL_INTERRUPT_5
#endif
 
/* please NOTE that slot D is taken for RTC */
#define CYGNUM_LAST_IDT_INTERRUPT	20
 
#define CYGNUM_HAL_INTERRUPT_SIO_0 25
#define CYGNUM_HAL_INTERRUPT_SIO_1 26
 
#define CYGNUM_HAL_PCI_A      CYGNUM_HAL_INTERRUPT_1
#define CYGNUM_HAL_PCI_B      CYGNUM_HAL_INTERRUPT_2
#define CYGNUM_HAL_PCI_C      CYGNUM_HAL_INTERRUPT_4
#define CYGNUM_EXPANSION	  CYGNUM_HAL_INTERRUPT_3
 
 
#define CYGHWR_HAL_INTERRUPT_VECTORS_DEFINED
 
#endif
 
 
 
//--------------------------------------------------------------------------
// Interrupt controller access
// The default code here simply uses the fields present in the CP0 status
// and cause registers to implement this functionality.
// Beware of nops in this code. They fill delay slots and avoid CP0 hazards
// that might otherwise cause following code to run in the wrong state or
// cause a resource conflict.
 
#ifndef CYGHWR_HAL_INTERRUPT_CONTROLLER_ACCESS_DEFINED
 
#define HAL_INTERRUPT_MASK_CPU( _vector_ )          \
CYG_MACRO_START                                 \
    asm volatile (                              \
        "mfc0   $3,$12\n"                       \
        "la     $2,0x00000400\n"                \
        "sllv   $2,$2,%0\n"                     \
        "nor    $2,$2,$0\n"                     \
        "and    $3,$3,$2\n"                     \
        "mtc0   $3,$12\n"                       \
        "nop; nop; nop\n"                       \
        :                                       \
        : "r"(_vector_)                         \
        : "$2", "$3"                            \
        );                                      \
CYG_MACRO_END
 
#define HAL_INTERRUPT_UNMASK_CPU( _vector_ )        \
CYG_MACRO_START                                 \
    asm volatile (                              \
        "mfc0   $3,$12\n"                       \
        "la     $2,0x00000400\n"                \
        "sllv   $2,$2,%0\n"                     \
        "or     $3,$3,$2\n"                     \
        "mtc0   $3,$12\n"                       \
        "nop; nop; nop\n"                       \
        :                                       \
        : "r"(_vector_)                         \
        : "$2", "$3"                            \
        );                                      \
CYG_MACRO_END
 
#define HAL_INTERRUPT_ACKNOWLEDGE_CPU( _vector_ )   \
CYG_MACRO_START                                 \
    asm volatile (                              \
        "mfc0   $3,$13\n"                       \
        "la     $2,0x00000400\n"                \
        "sllv   $2,$2,%0\n"                     \
        "nor    $2,$2,$0\n"                     \
        "and    $3,$3,$2\n"                     \
        "mtc0   $3,$13\n"                       \
        "nop; nop; nop\n"                       \
        :                                       \
        : "r"(_vector_)                         \
        : "$2", "$3"                            \
        );                                      \
CYG_MACRO_END
 
#define HAL_INTERRUPT_CONFIGURE( _vector_, _level_, _up_ )
 
#define HAL_INTERRUPT_SET_LEVEL( _vector_, _level_ )
 
 
externC void cyg_hal_interrupt_mask(cyg_uint32 vector);
externC void cyg_hal_interrupt_unmask(cyg_uint32 vector);
externC void cyg_hal_interrupt_acknowledge(cyg_uint32 vector);
 
#define HAL_INTERRUPT_MASK( _vector_ )          \
CYG_MACRO_START                                 \
	cyg_hal_interrupt_mask ( (_vector_) );		\
CYG_MACRO_END
 
#define HAL_INTERRUPT_UNMASK( _vector_ )                  \
    CYG_MACRO_START                                       \
        cyg_hal_interrupt_unmask ( (_vector_) );          \
    CYG_MACRO_END
 
#define HAL_INTERRUPT_ACKNOWLEDGE( _vector_ )             \
    CYG_MACRO_START                                       \
        cyg_hal_interrupt_acknowledge ( (_vector_) );     \
    CYG_MACRO_END
 
#define CYGHWR_HAL_INTERRUPT_CONTROLLER_ACCESS_DEFINED
 
#endif
 
 
#endif /* ifndef CYGONCE_HAL_PLF_INTR_H */
//--------------------------------------------------------------------------
// End of plf_intr.h